Unit Converter
Convert cm to inches, kg to pounds, Celsius to Fahrenheit and much more. Eight unit categories, precise conversion factors, a full table showing your value in every unit of the category, and a swap button to flip directions.
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Your value in every unit
How to use the Unit Converter
- 1 Pick a category: length, weight, temperature, speed, area, volume, data or time.
- 2 Type a value and choose the units to convert from and to — the result updates live.
- 3 Use the table below to see your value in every unit of that category at once.
Frequently asked questions
Which unit categories are included?
Length, weight, temperature, speed, area, volume, digital storage and time — covering the conversions people need most, from cm to inches and kg to lbs to gigabytes.
How accurate are the conversions?
Standard international definitions are used (1 inch = 2.54 cm exactly, 1 lb = 0.45359237 kg exactly, and so on). Results are computed at full float precision — no rounding until display.
How does temperature conversion work?
Temperature uses offset formulas rather than simple factors: °F = °C × 9/5 + 32, and K = °C + 273.15. The converter applies these exactly, including negative temperatures.